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Paul Bakkerbdb912d2012-02-13 23:11:30 +00001/*
Paul Bakkerf3df61a2013-08-26 17:22:23 +02002 * Key writing application
Paul Bakkerbdb912d2012-02-13 23:11:30 +00003 *
Bence Szépkúti1e148272020-08-07 13:07:28 +02004 * Copyright The Mbed TLS Contributors
Manuel Pégourié-Gonnard37ff1402015-09-04 14:21:07 +02005 * SPDX-License-Identifier: Apache-2.0
6 *
7 * Licensed under the Apache License, Version 2.0 (the "License"); you may
8 * not use this file except in compliance with the License.
9 * You may obtain a copy of the License at
10 *
11 * http://www.apache.org/licenses/LICENSE-2.0
12 *
13 * Unless required by applicable law or agreed to in writing, software
14 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
15 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16 * See the License for the specific language governing permissions and
17 * limitations under the License.
Paul Bakkerbdb912d2012-02-13 23:11:30 +000018 */
19
Bence Szépkútic662b362021-05-27 11:25:03 +020020#include "mbedtls/build_info.h"
Paul Bakkerbdb912d2012-02-13 23:11:30 +000021
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +020022#if defined(MBEDTLS_PLATFORM_C)
Manuel Pégourié-Gonnard7f809972015-03-09 17:05:11 +000023#include "mbedtls/platform.h"
Rich Evansf90016a2015-01-19 14:26:37 +000024#else
Rich Evans18b78c72015-02-11 14:06:19 +000025#include <stdio.h>
Andres Amaya Garciaed684882018-04-29 20:07:30 +010026#include <stdlib.h>
27#define mbedtls_printf printf
Manuel Pégourié-Gonnard3ef6a6d2018-12-10 14:31:45 +010028#define mbedtls_exit exit
Andres Amaya Garcia7d429652018-04-30 22:42:33 +010029#define MBEDTLS_EXIT_SUCCESS EXIT_SUCCESS
Andres Amaya Garciaed684882018-04-29 20:07:30 +010030#define MBEDTLS_EXIT_FAILURE EXIT_FAILURE
31#endif /* MBEDTLS_PLATFORM_C */
Rich Evansf90016a2015-01-19 14:26:37 +000032
Manuel Pégourié-Gonnard1503a9a2021-06-16 10:35:56 +020033#if defined(MBEDTLS_PK_PARSE_C) && defined(MBEDTLS_PK_WRITE_C) && \
34 defined(MBEDTLS_FS_IO) && \
35 defined(MBEDTLS_ENTROPY_C) && defined(MBEDTLS_CTR_DRBG_C)
Manuel Pégourié-Gonnard7f809972015-03-09 17:05:11 +000036#include "mbedtls/error.h"
37#include "mbedtls/pk.h"
38#include "mbedtls/error.h"
Paul Bakkerbdb912d2012-02-13 23:11:30 +000039
Manuel Pégourié-Gonnard1503a9a2021-06-16 10:35:56 +020040#include "mbedtls/entropy.h"
41#include "mbedtls/ctr_drbg.h"
Manuel Pégourié-Gonnard84dea012021-06-15 11:29:26 +020042
Rich Evans18b78c72015-02-11 14:06:19 +000043#include <stdio.h>
44#include <string.h>
45#endif
Paul Bakkered27a042013-04-18 22:46:23 +020046
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +020047#if defined(MBEDTLS_PEM_WRITE_C)
Rich Evans18b78c72015-02-11 14:06:19 +000048#define USAGE_OUT \
49 " output_file=%%s default: keyfile.pem\n" \
50 " output_format=pem|der default: pem\n"
Paul Bakkered27a042013-04-18 22:46:23 +020051#else
Rich Evans18b78c72015-02-11 14:06:19 +000052#define USAGE_OUT \
53 " output_file=%%s default: keyfile.der\n" \
54 " output_format=der default: der\n"
55#endif
56
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +020057#if defined(MBEDTLS_PEM_WRITE_C)
Rich Evans18b78c72015-02-11 14:06:19 +000058#define DFL_OUTPUT_FILENAME "keyfile.pem"
59#define DFL_OUTPUT_FORMAT OUTPUT_FORMAT_PEM
60#else
61#define DFL_OUTPUT_FILENAME "keyfile.der"
62#define DFL_OUTPUT_FORMAT OUTPUT_FORMAT_DER
63#endif
64
65#define DFL_MODE MODE_NONE
66#define DFL_FILENAME "keyfile.key"
67#define DFL_DEBUG_LEVEL 0
68#define DFL_OUTPUT_MODE OUTPUT_MODE_NONE
Paul Bakkered27a042013-04-18 22:46:23 +020069
Paul Bakkerbdb912d2012-02-13 23:11:30 +000070#define MODE_NONE 0
71#define MODE_PRIVATE 1
72#define MODE_PUBLIC 2
73
74#define OUTPUT_MODE_NONE 0
75#define OUTPUT_MODE_PRIVATE 1
76#define OUTPUT_MODE_PUBLIC 2
77
Paul Bakkerf3df61a2013-08-26 17:22:23 +020078#define OUTPUT_FORMAT_PEM 0
79#define OUTPUT_FORMAT_DER 1
80
Rich Evans18b78c72015-02-11 14:06:19 +000081#define USAGE \
Hanno Becker40371ec2017-08-23 06:46:17 +010082 "\n usage: key_app_writer param=<>...\n" \
Rich Evans18b78c72015-02-11 14:06:19 +000083 "\n acceptable parameters:\n" \
84 " mode=private|public default: none\n" \
85 " filename=%%s default: keyfile.key\n" \
86 " output_mode=private|public default: none\n" \
87 USAGE_OUT \
88 "\n"
Manuel Pégourié-Gonnard6c5abfa2015-02-13 14:12:07 +000089
Hanno Beckerb14c3312018-10-16 13:45:22 +010090#if !defined(MBEDTLS_PK_PARSE_C) || \
91 !defined(MBEDTLS_PK_WRITE_C) || \
Manuel Pégourié-Gonnard1503a9a2021-06-16 10:35:56 +020092 !defined(MBEDTLS_FS_IO) || \
93 !defined(MBEDTLS_ENTROPY_C) || \
94 !defined(MBEDTLS_CTR_DRBG_C)
Rich Evans85b05ec2015-02-12 11:37:29 +000095int main( void )
Rich Evans18b78c72015-02-11 14:06:19 +000096{
Manuel Pégourié-Gonnard1503a9a2021-06-16 10:35:56 +020097 mbedtls_printf( "MBEDTLS_PK_PARSE_C and/or MBEDTLS_PK_WRITE_C and/or "
98 "MBEDTLS_ENTROPY_C and/or MBEDTLS_CTR_DRBG_C and/or "
99 "MBEDTLS_FS_IO not defined.\n" );
Krzysztof Stachowiak5e1b1952019-04-24 14:24:46 +0200100 mbedtls_exit( 0 );
Rich Evans18b78c72015-02-11 14:06:19 +0000101}
102#else
Simon Butcher63cb97e2018-12-06 17:43:31 +0000103
Simon Butcher63cb97e2018-12-06 17:43:31 +0000104
Paul Bakkerbdb912d2012-02-13 23:11:30 +0000105/*
106 * global options
107 */
108struct options
109{
110 int mode; /* the mode to run the application in */
Paul Bakkeref3f8c72013-06-24 13:01:08 +0200111 const char *filename; /* filename of the key file */
Paul Bakkerbdb912d2012-02-13 23:11:30 +0000112 int output_mode; /* the output mode to use */
Paul Bakkeref3f8c72013-06-24 13:01:08 +0200113 const char *output_file; /* where to store the constructed key file */
Paul Bakkerf3df61a2013-08-26 17:22:23 +0200114 int output_format; /* the output format to use */
Paul Bakkerbdb912d2012-02-13 23:11:30 +0000115} opt;
116
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200117static int write_public_key( mbedtls_pk_context *key, const char *output_file )
Paul Bakkerbdb912d2012-02-13 23:11:30 +0000118{
Paul Bakkerf3df61a2013-08-26 17:22:23 +0200119 int ret;
Paul Bakkerbdb912d2012-02-13 23:11:30 +0000120 FILE *f;
Paul Bakker1d569582012-10-03 20:35:44 +0000121 unsigned char output_buf[16000];
Paul Bakkerf3df61a2013-08-26 17:22:23 +0200122 unsigned char *c = output_buf;
123 size_t len = 0;
Paul Bakkerbdb912d2012-02-13 23:11:30 +0000124
Paul Bakker1d569582012-10-03 20:35:44 +0000125 memset(output_buf, 0, 16000);
Paul Bakkerbdb912d2012-02-13 23:11:30 +0000126
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200127#if defined(MBEDTLS_PEM_WRITE_C)
Paul Bakkerf3df61a2013-08-26 17:22:23 +0200128 if( opt.output_format == OUTPUT_FORMAT_PEM )
Paul Bakkerbdb912d2012-02-13 23:11:30 +0000129 {
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200130 if( ( ret = mbedtls_pk_write_pubkey_pem( key, output_buf, 16000 ) ) != 0 )
Paul Bakkerf3df61a2013-08-26 17:22:23 +0200131 return( ret );
132
133 len = strlen( (char *) output_buf );
Paul Bakkerbdb912d2012-02-13 23:11:30 +0000134 }
Paul Bakkerf3df61a2013-08-26 17:22:23 +0200135 else
Manuel Pégourié-Gonnardf9378d82014-06-24 13:11:25 +0200136#endif
Paul Bakkerf3df61a2013-08-26 17:22:23 +0200137 {
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200138 if( ( ret = mbedtls_pk_write_pubkey_der( key, output_buf, 16000 ) ) < 0 )
Paul Bakkerf3df61a2013-08-26 17:22:23 +0200139 return( ret );
140
141 len = ret;
Ron Eldorbb51cb32018-01-07 18:10:43 +0200142 c = output_buf + sizeof(output_buf) - len;
Paul Bakkerf3df61a2013-08-26 17:22:23 +0200143 }
144
145 if( ( f = fopen( output_file, "w" ) ) == NULL )
146 return( -1 );
147
148 if( fwrite( c, 1, len, f ) != len )
Paul Bakker0c226102014-04-17 16:02:36 +0200149 {
150 fclose( f );
Paul Bakkerf3df61a2013-08-26 17:22:23 +0200151 return( -1 );
Paul Bakker0c226102014-04-17 16:02:36 +0200152 }
Paul Bakkerf3df61a2013-08-26 17:22:23 +0200153
Paul Bakker0c226102014-04-17 16:02:36 +0200154 fclose( f );
Paul Bakkerf3df61a2013-08-26 17:22:23 +0200155
156 return( 0 );
Paul Bakkerbdb912d2012-02-13 23:11:30 +0000157}
158
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200159static int write_private_key( mbedtls_pk_context *key, const char *output_file )
Paul Bakkerbdb912d2012-02-13 23:11:30 +0000160{
Paul Bakkerf3df61a2013-08-26 17:22:23 +0200161 int ret;
Paul Bakkerbdb912d2012-02-13 23:11:30 +0000162 FILE *f;
Paul Bakker1d569582012-10-03 20:35:44 +0000163 unsigned char output_buf[16000];
Paul Bakkerf3df61a2013-08-26 17:22:23 +0200164 unsigned char *c = output_buf;
165 size_t len = 0;
Paul Bakkerbdb912d2012-02-13 23:11:30 +0000166
Paul Bakker1d569582012-10-03 20:35:44 +0000167 memset(output_buf, 0, 16000);
Manuel Pégourié-Gonnardf9378d82014-06-24 13:11:25 +0200168
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200169#if defined(MBEDTLS_PEM_WRITE_C)
Paul Bakkerf3df61a2013-08-26 17:22:23 +0200170 if( opt.output_format == OUTPUT_FORMAT_PEM )
Paul Bakkerbdb912d2012-02-13 23:11:30 +0000171 {
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200172 if( ( ret = mbedtls_pk_write_key_pem( key, output_buf, 16000 ) ) != 0 )
Paul Bakkerf3df61a2013-08-26 17:22:23 +0200173 return( ret );
174
175 len = strlen( (char *) output_buf );
Paul Bakkerbdb912d2012-02-13 23:11:30 +0000176 }
Paul Bakkerf3df61a2013-08-26 17:22:23 +0200177 else
Manuel Pégourié-Gonnardf9378d82014-06-24 13:11:25 +0200178#endif
Paul Bakkerf3df61a2013-08-26 17:22:23 +0200179 {
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200180 if( ( ret = mbedtls_pk_write_key_der( key, output_buf, 16000 ) ) < 0 )
Paul Bakkerf3df61a2013-08-26 17:22:23 +0200181 return( ret );
182
183 len = ret;
Christian Walthera92c5452018-11-28 13:32:27 +0100184 c = output_buf + sizeof(output_buf) - len;
Paul Bakkerf3df61a2013-08-26 17:22:23 +0200185 }
186
187 if( ( f = fopen( output_file, "w" ) ) == NULL )
188 return( -1 );
189
190 if( fwrite( c, 1, len, f ) != len )
Paul Bakker0c226102014-04-17 16:02:36 +0200191 {
192 fclose( f );
Paul Bakkerf3df61a2013-08-26 17:22:23 +0200193 return( -1 );
Paul Bakker0c226102014-04-17 16:02:36 +0200194 }
Paul Bakkerf3df61a2013-08-26 17:22:23 +0200195
Paul Bakker0c226102014-04-17 16:02:36 +0200196 fclose( f );
Paul Bakkerf3df61a2013-08-26 17:22:23 +0200197
198 return( 0 );
Paul Bakkerbdb912d2012-02-13 23:11:30 +0000199}
200
Paul Bakkerbdb912d2012-02-13 23:11:30 +0000201int main( int argc, char *argv[] )
202{
Andres Amaya Garciaed684882018-04-29 20:07:30 +0100203 int ret = 1;
204 int exit_code = MBEDTLS_EXIT_FAILURE;
Gilles Peskine680747b2021-08-06 14:37:01 +0200205#if defined(MBEDTLS_ERROR_C)
206 char buf[200];
207#endif
Paul Bakker1d569582012-10-03 20:35:44 +0000208 int i;
Paul Bakkerbdb912d2012-02-13 23:11:30 +0000209 char *p, *q;
210
Manuel Pégourié-Gonnard1503a9a2021-06-16 10:35:56 +0200211 const char *pers = "pkey/key_app";
212 mbedtls_entropy_context entropy;
213 mbedtls_ctr_drbg_context ctr_drbg;
214
Hanno Becker40371ec2017-08-23 06:46:17 +0100215 mbedtls_pk_context key;
216 mbedtls_mpi N, P, Q, D, E, DP, DQ, QP;
217
Paul Bakkerbdb912d2012-02-13 23:11:30 +0000218 /*
219 * Set to sane values
220 */
Manuel Pégourié-Gonnard1503a9a2021-06-16 10:35:56 +0200221 mbedtls_entropy_init( &entropy );
222 mbedtls_ctr_drbg_init( &ctr_drbg );
223
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200224 mbedtls_pk_init( &key );
Gilles Peskine680747b2021-08-06 14:37:01 +0200225#if defined(MBEDTLS_ERROR_C)
Manuel Pégourié-Gonnard26b4d452013-09-12 06:56:06 +0200226 memset( buf, 0, sizeof( buf ) );
Gilles Peskine680747b2021-08-06 14:37:01 +0200227#endif
Paul Bakkerbdb912d2012-02-13 23:11:30 +0000228
Hanno Becker40371ec2017-08-23 06:46:17 +0100229 mbedtls_mpi_init( &N ); mbedtls_mpi_init( &P ); mbedtls_mpi_init( &Q );
230 mbedtls_mpi_init( &D ); mbedtls_mpi_init( &E ); mbedtls_mpi_init( &DP );
231 mbedtls_mpi_init( &DQ ); mbedtls_mpi_init( &QP );
232
Paul Bakkerbdb912d2012-02-13 23:11:30 +0000233 if( argc == 0 )
234 {
235 usage:
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200236 mbedtls_printf( USAGE );
Paul Bakkerbdb912d2012-02-13 23:11:30 +0000237 goto exit;
238 }
239
240 opt.mode = DFL_MODE;
241 opt.filename = DFL_FILENAME;
Paul Bakkerbdb912d2012-02-13 23:11:30 +0000242 opt.output_mode = DFL_OUTPUT_MODE;
243 opt.output_file = DFL_OUTPUT_FILENAME;
Paul Bakkerf3df61a2013-08-26 17:22:23 +0200244 opt.output_format = DFL_OUTPUT_FORMAT;
Paul Bakkerbdb912d2012-02-13 23:11:30 +0000245
246 for( i = 1; i < argc; i++ )
247 {
Paul Bakkerbdb912d2012-02-13 23:11:30 +0000248 p = argv[i];
249 if( ( q = strchr( p, '=' ) ) == NULL )
250 goto usage;
251 *q++ = '\0';
252
253 if( strcmp( p, "mode" ) == 0 )
254 {
255 if( strcmp( q, "private" ) == 0 )
256 opt.mode = MODE_PRIVATE;
257 else if( strcmp( q, "public" ) == 0 )
258 opt.mode = MODE_PUBLIC;
259 else
260 goto usage;
261 }
262 else if( strcmp( p, "output_mode" ) == 0 )
263 {
264 if( strcmp( q, "private" ) == 0 )
265 opt.output_mode = OUTPUT_MODE_PRIVATE;
266 else if( strcmp( q, "public" ) == 0 )
267 opt.output_mode = OUTPUT_MODE_PUBLIC;
268 else
269 goto usage;
270 }
Paul Bakkerf3df61a2013-08-26 17:22:23 +0200271 else if( strcmp( p, "output_format" ) == 0 )
272 {
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200273#if defined(MBEDTLS_PEM_WRITE_C)
Paul Bakkerf3df61a2013-08-26 17:22:23 +0200274 if( strcmp( q, "pem" ) == 0 )
275 opt.output_format = OUTPUT_FORMAT_PEM;
Manuel Pégourié-Gonnardf9378d82014-06-24 13:11:25 +0200276 else
277#endif
278 if( strcmp( q, "der" ) == 0 )
Paul Bakkerf3df61a2013-08-26 17:22:23 +0200279 opt.output_format = OUTPUT_FORMAT_DER;
280 else
281 goto usage;
282 }
Paul Bakkerbdb912d2012-02-13 23:11:30 +0000283 else if( strcmp( p, "filename" ) == 0 )
284 opt.filename = q;
285 else if( strcmp( p, "output_file" ) == 0 )
286 opt.output_file = q;
Paul Bakkerbdb912d2012-02-13 23:11:30 +0000287 else
288 goto usage;
289 }
290
291 if( opt.mode == MODE_NONE && opt.output_mode != OUTPUT_MODE_NONE )
292 {
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200293 mbedtls_printf( "\nCannot output a key without reading one.\n");
Paul Bakkerbdb912d2012-02-13 23:11:30 +0000294 goto exit;
295 }
296
297 if( opt.mode == MODE_PUBLIC && opt.output_mode == OUTPUT_MODE_PRIVATE )
298 {
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200299 mbedtls_printf( "\nCannot output a private key from a public key.\n");
Paul Bakkerbdb912d2012-02-13 23:11:30 +0000300 goto exit;
301 }
302
303 if( opt.mode == MODE_PRIVATE )
304 {
305 /*
306 * 1.1. Load the key
307 */
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200308 mbedtls_printf( "\n . Loading the private key ..." );
Paul Bakkerbdb912d2012-02-13 23:11:30 +0000309 fflush( stdout );
310
Manuel Pégourié-Gonnard1503a9a2021-06-16 10:35:56 +0200311 if( ( ret = mbedtls_ctr_drbg_seed( &ctr_drbg, mbedtls_entropy_func, &entropy,
312 (const unsigned char *) pers,
313 strlen( pers ) ) ) != 0 )
314 {
315 mbedtls_printf( " failed\n ! mbedtls_ctr_drbg_seed returned -0x%04x\n", (unsigned int) -ret );
316 goto exit;
317 }
318
Manuel Pégourié-Gonnard84dea012021-06-15 11:29:26 +0200319 ret = mbedtls_pk_parse_keyfile( &key, opt.filename, NULL,
Manuel Pégourié-Gonnard1503a9a2021-06-16 10:35:56 +0200320 mbedtls_ctr_drbg_random, &ctr_drbg );
Paul Bakkerbdb912d2012-02-13 23:11:30 +0000321 if( ret != 0 )
322 {
Gilles Peskine680747b2021-08-06 14:37:01 +0200323 mbedtls_printf( " failed\n ! mbedtls_pk_parse_keyfile returned -0x%04x", (unsigned int) -ret );
Paul Bakkerbdb912d2012-02-13 23:11:30 +0000324 goto exit;
325 }
326
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200327 mbedtls_printf( " ok\n" );
Paul Bakkerbdb912d2012-02-13 23:11:30 +0000328
329 /*
330 * 1.2 Print the key
331 */
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200332 mbedtls_printf( " . Key information ...\n" );
Manuel Pégourié-Gonnard26b4d452013-09-12 06:56:06 +0200333
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200334#if defined(MBEDTLS_RSA_C)
335 if( mbedtls_pk_get_type( &key ) == MBEDTLS_PK_RSA )
Manuel Pégourié-Gonnard26b4d452013-09-12 06:56:06 +0200336 {
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200337 mbedtls_rsa_context *rsa = mbedtls_pk_rsa( key );
Hanno Becker40371ec2017-08-23 06:46:17 +0100338
339 if( ( ret = mbedtls_rsa_export ( rsa, &N, &P, &Q, &D, &E ) ) != 0 ||
340 ( ret = mbedtls_rsa_export_crt( rsa, &DP, &DQ, &QP ) ) != 0 )
341 {
342 mbedtls_printf( " failed\n ! could not export RSA parameters\n\n" );
343 goto exit;
344 }
345
346 mbedtls_mpi_write_file( "N: ", &N, 16, NULL );
347 mbedtls_mpi_write_file( "E: ", &E, 16, NULL );
348 mbedtls_mpi_write_file( "D: ", &D, 16, NULL );
349 mbedtls_mpi_write_file( "P: ", &P, 16, NULL );
350 mbedtls_mpi_write_file( "Q: ", &Q, 16, NULL );
351 mbedtls_mpi_write_file( "DP: ", &DP, 16, NULL );
352 mbedtls_mpi_write_file( "DQ: ", &DQ, 16, NULL );
353 mbedtls_mpi_write_file( "QP: ", &QP, 16, NULL );
Manuel Pégourié-Gonnard26b4d452013-09-12 06:56:06 +0200354 }
355 else
356#endif
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200357#if defined(MBEDTLS_ECP_C)
358 if( mbedtls_pk_get_type( &key ) == MBEDTLS_PK_ECKEY )
Paul Bakker2e24ca72013-09-18 15:21:27 +0200359 {
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200360 mbedtls_ecp_keypair *ecp = mbedtls_pk_ec( key );
Mateusz Starzyk5dd4f6e2021-05-19 19:35:35 +0200361 mbedtls_mpi_write_file( "Q(X): ", &ecp->MBEDTLS_PRIVATE(Q).MBEDTLS_PRIVATE(X), 16, NULL );
362 mbedtls_mpi_write_file( "Q(Y): ", &ecp->MBEDTLS_PRIVATE(Q).MBEDTLS_PRIVATE(Y), 16, NULL );
363 mbedtls_mpi_write_file( "Q(Z): ", &ecp->MBEDTLS_PRIVATE(Q).MBEDTLS_PRIVATE(Z), 16, NULL );
364 mbedtls_mpi_write_file( "D : ", &ecp->MBEDTLS_PRIVATE(d) , 16, NULL );
Paul Bakker2e24ca72013-09-18 15:21:27 +0200365 }
366 else
367#endif
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200368 mbedtls_printf("key type not supported yet\n");
Paul Bakkerbdb912d2012-02-13 23:11:30 +0000369
370 }
371 else if( opt.mode == MODE_PUBLIC )
372 {
373 /*
374 * 1.1. Load the key
375 */
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200376 mbedtls_printf( "\n . Loading the public key ..." );
Paul Bakkerbdb912d2012-02-13 23:11:30 +0000377 fflush( stdout );
378
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200379 ret = mbedtls_pk_parse_public_keyfile( &key, opt.filename );
Paul Bakkerbdb912d2012-02-13 23:11:30 +0000380
381 if( ret != 0 )
382 {
Gilles Peskine680747b2021-08-06 14:37:01 +0200383 mbedtls_printf( " failed\n ! mbedtls_pk_parse_public_key returned -0x%04x", (unsigned int) -ret );
Paul Bakkerbdb912d2012-02-13 23:11:30 +0000384 goto exit;
385 }
386
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200387 mbedtls_printf( " ok\n" );
Paul Bakkerbdb912d2012-02-13 23:11:30 +0000388
389 /*
390 * 1.2 Print the key
391 */
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200392 mbedtls_printf( " . Key information ...\n" );
Manuel Pégourié-Gonnard26b4d452013-09-12 06:56:06 +0200393
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200394#if defined(MBEDTLS_RSA_C)
395 if( mbedtls_pk_get_type( &key ) == MBEDTLS_PK_RSA )
Manuel Pégourié-Gonnard26b4d452013-09-12 06:56:06 +0200396 {
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200397 mbedtls_rsa_context *rsa = mbedtls_pk_rsa( key );
Hanno Becker40371ec2017-08-23 06:46:17 +0100398
399 if( ( ret = mbedtls_rsa_export( rsa, &N, NULL, NULL,
400 NULL, &E ) ) != 0 )
401 {
402 mbedtls_printf( " failed\n ! could not export RSA parameters\n\n" );
403 goto exit;
404 }
405 mbedtls_mpi_write_file( "N: ", &N, 16, NULL );
406 mbedtls_mpi_write_file( "E: ", &E, 16, NULL );
Manuel Pégourié-Gonnard26b4d452013-09-12 06:56:06 +0200407 }
408 else
409#endif
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200410#if defined(MBEDTLS_ECP_C)
411 if( mbedtls_pk_get_type( &key ) == MBEDTLS_PK_ECKEY )
Paul Bakker2e24ca72013-09-18 15:21:27 +0200412 {
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200413 mbedtls_ecp_keypair *ecp = mbedtls_pk_ec( key );
Mateusz Starzyk5dd4f6e2021-05-19 19:35:35 +0200414 mbedtls_mpi_write_file( "Q(X): ", &ecp->MBEDTLS_PRIVATE(Q).MBEDTLS_PRIVATE(X), 16, NULL );
415 mbedtls_mpi_write_file( "Q(Y): ", &ecp->MBEDTLS_PRIVATE(Q).MBEDTLS_PRIVATE(Y), 16, NULL );
416 mbedtls_mpi_write_file( "Q(Z): ", &ecp->MBEDTLS_PRIVATE(Q).MBEDTLS_PRIVATE(Z), 16, NULL );
Paul Bakker2e24ca72013-09-18 15:21:27 +0200417 }
418 else
419#endif
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200420 mbedtls_printf("key type not supported yet\n");
Paul Bakkerbdb912d2012-02-13 23:11:30 +0000421 }
422 else
423 goto usage;
424
425 if( opt.output_mode == OUTPUT_MODE_PUBLIC )
426 {
Manuel Pégourié-Gonnard26b4d452013-09-12 06:56:06 +0200427 write_public_key( &key, opt.output_file );
Paul Bakkerbdb912d2012-02-13 23:11:30 +0000428 }
429 if( opt.output_mode == OUTPUT_MODE_PRIVATE )
430 {
Manuel Pégourié-Gonnard26b4d452013-09-12 06:56:06 +0200431 write_private_key( &key, opt.output_file );
Paul Bakkerbdb912d2012-02-13 23:11:30 +0000432 }
433
Andres Amaya Garciaed684882018-04-29 20:07:30 +0100434 exit_code = MBEDTLS_EXIT_SUCCESS;
435
Paul Bakkerbdb912d2012-02-13 23:11:30 +0000436exit:
437
Andres Amaya Garciaed684882018-04-29 20:07:30 +0100438 if( exit_code != MBEDTLS_EXIT_SUCCESS )
Manuel Pégourié-Gonnard26b4d452013-09-12 06:56:06 +0200439 {
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200440#ifdef MBEDTLS_ERROR_C
441 mbedtls_strerror( ret, buf, sizeof( buf ) );
442 mbedtls_printf( " - %s\n", buf );
Manuel Pégourié-Gonnard26b4d452013-09-12 06:56:06 +0200443#else
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200444 mbedtls_printf("\n");
Manuel Pégourié-Gonnard26b4d452013-09-12 06:56:06 +0200445#endif
446 }
447
Hanno Becker40371ec2017-08-23 06:46:17 +0100448 mbedtls_mpi_free( &N ); mbedtls_mpi_free( &P ); mbedtls_mpi_free( &Q );
449 mbedtls_mpi_free( &D ); mbedtls_mpi_free( &E ); mbedtls_mpi_free( &DP );
450 mbedtls_mpi_free( &DQ ); mbedtls_mpi_free( &QP );
451
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200452 mbedtls_pk_free( &key );
Paul Bakkerbdb912d2012-02-13 23:11:30 +0000453
Manuel Pégourié-Gonnard1503a9a2021-06-16 10:35:56 +0200454 mbedtls_ctr_drbg_free( &ctr_drbg );
455 mbedtls_entropy_free( &entropy );
456
Paul Bakkerbdb912d2012-02-13 23:11:30 +0000457#if defined(_WIN32)
Manuel Pégourié-Gonnard2cf5a7c2015-04-08 12:49:31 +0200458 mbedtls_printf( " + Press Enter to exit this program.\n" );
Paul Bakkerbdb912d2012-02-13 23:11:30 +0000459 fflush( stdout ); getchar();
460#endif
461
Krzysztof Stachowiak5e1b1952019-04-24 14:24:46 +0200462 mbedtls_exit( exit_code );
Paul Bakkerbdb912d2012-02-13 23:11:30 +0000463}
Manuel Pégourié-Gonnard1503a9a2021-06-16 10:35:56 +0200464#endif /* MBEDTLS_PK_PARSE_C && MBEDTLS_PK_WRITE_C && MBEDTLS_FS_IO &&
465 MBEDTLS_ENTROPY_C && MBEDTLS_CTR_DRBG_C */